3. A force of 150 N is applied at an angle of 53° to a 30 kg box of kittens across a level surface with a coefficient of friction of 0.1 for 8 meters. a. Draw a free body diagram.
b. How much work is done by the applied force?
c. How much work is done by friction?
d. What is the net work done on the box?

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j